docs: fix `undefined` wireframe github link #19938

Job	Run time
pre_job	8s
Test (e2e)	8m 18s
Test (Unit)	54s
Build vuetify	1m 48s
Lint (--scope vuetify --scope @vuetify/api-generator)	1m 8s
Lint (--scope vuetifyjs.com)	4m 22s
Build docs	0s
publish-docs	0s
deploy	0s
	16m 38s

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